英语单词“Echo 2”的翻译、意思、用法、释义-英汉词典

单词	Echo 2
释义	Echo2['ekəu]n.1.■【电信学】(无线电联络用的)字母e的代称2.■埃科卫星(美国早期发射的两颗无线通信卫星之一)
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